| 摘要 |
<p>Novel nitrogenous heterocyclic derivatives with specified structure. Further, there is provided an organic electroluminescence device comprising a positive electrode and a negative electrode and, interposed therebetween, one or two or more organic thin-film layers including at least a light emitting layer, wherein at least one of the organic thin-film layers contains any of the nitrogenous heterocyclic derivatives alone or a component of mixture. Thus, there are made available novel nitrogenous heterocyclic derivatives being useful as a constituent of organic EL device, and is realized an organic EL device wherein the nitrogenous heterocyclic derivatives are used in at least one of organic compound layers to thereby attain high emission brightness and luminous efficiency even at low voltage.</p> |
